A passthrough codec is only needed for DRM

In passthrough MediaCodec is not used except if
the format has a DRM.

Nevertheless the code was still requiring that a
passthrough decoder be present even if it was not going to be
used (aka no drm).

PiperOrigin-RevId: 309947271

library/core/src/main/java/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java

@@ -219,7 +219,8 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
     boolean supportsFormatDrm = supportsFormatDrm(format);
     boolean supportsFormatDrm = supportsFormatDrm(format);
     if (supportsFormatDrm
     if (supportsFormatDrm
         && usePassthrough(format.channelCount, mimeType)
         && usePassthrough(format.channelCount, mimeType)
-        && MediaCodecUtil.getPassthroughDecoderInfo() != null) {
+        // A Passthrough decoder is only needed to decode the DRM encryption.
+        && (format.drmInitData == null || MediaCodecUtil.getPassthroughDecoderInfo() != null)) {
       return RendererCapabilities.create(FORMAT_HANDLED, ADAPTIVE_NOT_SEAMLESS, tunnelingSupport);
       return RendererCapabilities.create(FORMAT_HANDLED, ADAPTIVE_NOT_SEAMLESS, tunnelingSupport);
     }
     }
     if ((MimeTypes.AUDIO_RAW.equals(mimeType)
     if ((MimeTypes.AUDIO_RAW.equals(mimeType)